The effects of galaxy shape and rotation on the X-ray haloes of early-type galaxies - II. Numerical simulations

Abstract

By means of high resolution 2D hydrodynamical simulations, we study the evolution of the hot ISM for a large set of early-type galaxy models, characterized by various degrees of flattening and internal rotation. The galaxies are described by state-of-the-art axisymmetric two-component models, tailored to reproduce real systems; the dark matter haloes follow the Navarro-Frenk-White or the Einasto profile. The gas is produced by the evolving stars, and heated by Type Ia SNe. We find that, in general, the rotation field of the ISM in rotating galaxies is very similar to that of the stars, with a consequent negligible heating contribution from thermalization of the ordered motions. The relative importance of flattening and rotation in determining the final X-ray luminosity $L_x$ and temperature $T_x$ of the hot haloes is a function of the galactic mass. Flattening and rotation in low mass galaxies favour the establishment of global winds, with the consequent reduction of $L_x$. In medium-to-high mass galaxies, flattening and rotation are not sufficient to induce global winds, however, in the rotating models the nature of the gas flows is deeply affected by conservation of angular momentum, resulting in a reduction of both $L_x$ and $T_x$.

arXiv comment20 pages, 13 figures. Accepted for publication in MNRAS

References in corpus (28)

• A Universal Density Profile from Hierarchical Clustering
• The Average Star Formation Histories of Galaxies in Dark Matter Halos from z=0-8
• Collisional Plasma Models with APEC/APED: Emission Line Diagnostics of Hydrogen-like and Helium-like Ions
• Evolutionary population synthesis: models, analysis of the ingredients and application to high-z galaxies
• The ATLAS3D project - III. A census of the stellar angular momentum within the effective radius of early-type galaxies: unveiling the distribution of Fast and Slow Rotators
• The SAURON project -- X. The orbital anisotropy of elliptical and lenticular galaxies: revisiting the (V/sigma,epsilon) diagram with integral-field stellar kinematics
• The Atlas3D project -- IV: the molecular gas content of early-type galaxies
• Hot Gas In and Around Elliptical Galaxies
• The SAURON project XVI: On the Sources of Ionisation for the Gas in Elliptical and Lenticular Galaxies
• The Atlas3D project - X. On the origin of the molecular and ionised gas in early-type galaxies
• Feedback from Central Black Holes in Elliptical Galaxies: Two-dimensional Models Compared to One-dimensional Models
• Radiative feedback from quasars and the growth of massive black holes in stellar spheroids
• Revisiting with Chandra the Scaling Relations of the X-ray Emission Components (Binaries, Nuclei and Hot Gas) of Early Type Galaxies
• Analytical properties of Einasto dark matter haloes
• Luminosity Dependence in the Fundamental Plane Projections of Elliptical Galaxies
• Mass Loss From Evolved Stars in Elliptical Galaxies
• The Atlas3D project - XIX. The hot-gas content of early-type galaxies: fast versus slow rotators
• Hot gas flows on global and nuclear galactic scales
• The energetics of flat and rotating early-type galaxies and their X-ray luminosity
• Thermal stability of self-gravitating, optically thin accretion disks
• AGN feedback in elliptical galaxies: numerical simulations
• The X-ray Emission in Post-Merger Ellipticals
• Dynamic S0 Galaxies II: the Role of Diffuse Hot Gas
• The temperature of hot gas halos of early-type galaxies
• Decoupled and inhomogeneous gas flows in S0 galaxies
• X-ray emission and internal kinematics in early-type galaxies. I. Observations
• The effects of stellar dynamics on the X-ray emission of flat early-type galaxies
• The Effects of Galaxy Shape and Rotation on the X-ray Haloes of Early-Type Galaxies

Cited by in corpus (30)

• Hot Atmospheres, Cold Gas, AGN Feedback and the Evolution of Early Type Galaxies: a Topical Perspective
• The Effect of the AGN Feedback on the Interstellar Medium of Early-Type Galaxies: 2D Hydrodynamical Simulations of the Low-Rotation Case
• Thermodynamic properties, multiphase gas and AGN feedback in a large sample of giant ellipticals
• The origin of the atomic and molecular gas contents of early-type galaxies. II. Misaligned gas accretion
• The MASSIVE survey - XI. What drives the molecular gas properties of early-type galaxies
• Black hole feeding and feedback: the physics inside the "subgrid"
• X-ray Scaling Relations of core and coreless E and S0 Galaxies
• X-ray scaling relations of early-type galaxies
• The AGN fuelling/feedback cycle in nearby radio galaxies II. Kinematics of the molecular gas
• Active Galactic Nuclei Feedback in an Elliptical Galaxy with the Most Updated AGN Physics (II): High-Angular Momentum Case
• Gas condensation in Brightest Group Galaxies unveiled with MUSE
• Stellar and AGN feedback in isolated early-type galaxies: the role in regulating star formation and ISM properties
• Origins of molecular clouds in early-type galaxies
• Chandra Early-Type Galaxy Atlas
• AGN feedback and the origin and fate of the hot gas in early-type galaxies
• Cooling in the X-ray halo of the rotating, massive early-type galaxy NGC 7049
• MACER improved: AGN feedback computed in rotating early-type galaxies at high resolution
• Two-component Jaffe models with a central black hole. I: the spherical case
• The SAMI Galaxy Survey: Kinematics of Dusty Early-Type Galaxies
• Hot gaseous atmospheres of rotating galaxies observed with XMM-Newton
• Metal abundances in the MACER simulations of the hot interstellar medium
• The AGN fuelling/feedback cycle in nearby radio galaxies - V. The cold atomic gas of NGC 3100 and its group
• The Hot Interstellar Medium
• Two-component galaxy models with a central BH -- II. The ellipsoidal case
• The formation channels of multiphase gas in nearby early-type galaxies
• Jeans modeling of axisymmetric galaxies with multiple stellar populations
• Stellar-gas kinematic misalignments in EAGLE: lifetimes and longevity of misaligned galaxies
• The Type Ia Supernova and Asymptotic Giant Branch Stellar Ejecta-regulated Interstellar Medium of Massive Galaxies
• A Parameter Space Exploration of High Resolution Numerically Evolved Early Type Galaxies Including AGN Feedback and Accurate Dynamical Treatment of Stellar Orbits
• Connections between Central Intensity Ratio and hot gas properties of early-type galaxies